Bacon Onion Apple Jam

Name: Bacon + Onion + Apple Jam
Ingredients: 1.5 pounds bacon; 2 sweet onions, diced; 2 Gala apples, diced; 3/4 cup apple cider vinegar; 1/2-3/4 cups brown sugar; 1/4 cup REAL maple syrup; 1/2 teaspoon cayenne pepper (or more to taste); 2 teaspoons Worcestershire; 2 tablespoons balsamic vinegar